Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!well!tswift
From: tswift@well.sf.ca.us (Theodore John Swift)
Newsgroups: comp.sys.tandy
Subject: Re: TRS-80 Info
Message-ID: <24523@well.sf.ca.us>
Date: 1 May 91 03:07:43 GMT
References: <1991Apr23.111448.3527@waikato.ac.nz>
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 18


Just to be pedantic:

> BUS--this interfaces the machine to the portable disk drive frome Tandy.
> It's also the interface to many 3rd party hardware attachments.

The second statement is true; In the Model 100 family the System Bus plug
(on the bottom in the 100, on the back "edge" in the 102 and 200) gives you
access to most of the critical system bus logic signals (address and data
bus, read/write lines, interrupts, port enables, etc). The Video/Disk
Interface plugs into this.
  The first statement is false: the Portable Disk Drive plugs into the
RS-232 serial port on the back edge.
-- 
----------------------
Ted Swift tswift@well.sf.ca.us
"You bally well are informed, Jeeves!  Do you know everything?"
"I don't know, sir"    ~P.G. Wodehouse